Music-leaf turner.



F. ARGHIBALD.

MUSIC LEAF TURNER.

APPLICATION FILED 11110.12, 1.912.

Patented Jan. '19, 1915.

3 SHEETPr-SHEET 1.

awe/whom l v i/wcmo F. ARGHIBALD.

MUSIC LEAP TURNER. V AYPLIUATION FILED DEO.12,1912.

1,125,250. Patented Jan. 19, 1915.

3 SHEETS-SHEET 2.

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' STATES PATENT oFF i REDunrhx ancnrnnnn, or vmcmm, nmrmsou. I

' Applicationflled December 12 To all whom it may cohccm:

Be it lmown that I, FREDERICK Anom- BALD, a citizen of the UnitedStates, residin at Virginia in the county of St. Louis an State ofMinnesota, have invented certain new and useful Improvements in Music-Leaf Turners; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains'to make and use the same.

This invention relates to music leaf turn ers, and it more particularlyrelates to an form of pedaloperated leaf turner.

An object of the invention is to provide a device of this characterwhich may he employed on planes and organs of various kindsfandadjustably fitted thereto. 7

Another object of the invention is to provide improved means, wherebythe music leaves may beturned alternately back and forth by mechanismconnected with a suitable pedal.

Another object of the'invention is to provide for turning any number ofleaves from one to four, and then turning the leaves back into theirnormal positions. h Another object of the invention is to provide adevice of this character which is com-' compact, economical, andthoroughly efficient in op eration. I

Other objects and advantages may be recited hereinafter andin theclaims.

In the accompanying drawings, which supplement this specification,Figure 1 is a front elevation view of my improved leaf' turnersupporting a piece of music. Fig. 2 is a rear elevation View,illustratingthe op crating mechanism. Fig. 3 is a fragmental sectionalview taken on the line 3-3 of Fig. 2. Fig. 4 is a detail view, inperspective, of one of the jointed levers. Fig. 5 is a verticalsectional view through one of the jointed le.- vers and its adjuncts.Fig. 6 is a fragmental perspective view of the vertical slide beam orcarriage and certain of its adjuncts, and, Fig. 7 is a fragmental detailView of the double-acting catch or slide-bar-engaging element.

Referring to these drawings, in which similar reference charactersdesignate corresponding parts throughout the, several views, the base orframe 10 is forme d from a plate of metal or other suitable n 1 1 tgr ;igal.

Specification of Letters Patent.

. Patented Jan. 19, 1915.

This plate 10 is rovided with a ertures 11 through which t h p portmgbracket 12 extend, the lower portion of said bracket being covered withfelt, rubber or other soft and pliable material, so that the piano ororgan will not be scratched or marred thereby when in operativepositlon, as shownin Fig. 3.

A fender 14 is secured on the bracket 12, said fender being covered withthe same kind of material as that which constitutes the element 13. 4Buttons 15 are pivoted at 16, to the base plate 10, said buttons beingprovided with lever arms 17 alternately turned into, and out ofengagement with the bracket 12, so that the same may he removed from onepair of holes and placed in another pair, for adjusting the positlon ofthe bracket with relation to the ease plate. 7

Formed atthe upper end of and preferably struck up therefrom, areoppos1tely disposed pairs of apertured lugs 18, and through theapertures of these lugs extend the parallel end portions of a restbracket 19, the intermediate and top 1912; Serial No.

the; plate 10,

por-

e curved ends of asupby which the buttons may be tionsof said bracketbeing covered with felt point "thereof being indicated at 26.

'Pivoted at 27, on the end of the beam 25 1s a shifter plate 28 havingan arcuate slot 29 therein, for receiving a headed stud, 30

On a laterally-extending arm or plate 31 is secured'a coiled spring 32,connecting with a link 33 which is pivotally connected at 34 with theplate 28; the function of the spring 32 being to retain the plate 28 inge 24 is held normally 7 which extends rearwardly fromthe beam 25.

' Each slide bar 42 is provided I extensions 42 and 42, the latter beingapertured for the reception of a thin stiip 38, of steel or othersuitable metal, which extends downward between the keys of the piano andthrough a suitable aperture therebeneath (not shown), whence it mayconnect with any suitable form of pedal, whereby it may be drawndownward, so as to draw ward extension 23 serving to guide the carriage"in its vertical reciprocations.

Adjacent to the upper end of the beam 25 is a rearwardly extendingstud40, and at the end of said beam 25 is pivoted the double-toothed catch41, which is adapted to freely oscillate laterally of the beam 25. Atopposite sides of the a series of guide apertures formed in the guidemembers 39, and within these gu de apertures are slidably seated pa1rsof slide bars 42, each pair of slide bars being connected to the;opposite ends of a lever or bellcrank, through the medium of links 43.The bell cranks 44 and 45 arepivoted at 46 and 47, respectively, to thebase plate 10. with rearward adapted for engagementby the catch 41. Thelower ends of the slide bars 42 extend under a uide plate 39', whichconstitutes a part'of tie guide member The upper middle portion of thebase plate 10. isprovided ,with an aperture 48 in hich is seateda'number of plates or tables 49, said tables extending laterally beyondthe aperture 48, and being fixedly secured to the base plate by meansof'vertical securing bars 50. The plates 49 are equally spaced apart,and provided with fixed studs 51 over which work a series of jointedlevers, each consisting of a lever member 52 and a second lever member53, the lever members being pivoted together by means of pivots 54. Oneend of the member 52 is slotted, at 52 for receiving the fixed stud 51.Loosely connected to the rearwardly extending end of each member 53 isone end of a link55,

the other end thereof being loosely connected, at 56, to one of'thebellcrank levers 44 or 45; it being understood that, there is a link 55for each jointed lever and for each bell crank lever, A vertical pivotpin 57 extends through all of the tables or plates .49 and through allof the lever members 53,

so that all of the jointed levers are pivoted concentric with relationto each other, and their concentric axes are in fixed position relativeto the base plate 10.

Each member 52 is provided with a longitudinal bore 52, a longitudinalslot 52 extension 24 is I communicating with the bore, and a recess 52extending downwardly from the bore.

Seated in the bore 52' of each member 52 is one end of a leaf-engagingarm 58 hav- 7 ing a downwardly extending tongue 59 fitted in the recess52*.

Each arm 58 is provided with a shoulder or spring seat 60, a sleeve 61being seated against the member 52 and being slidably seated on the arm58. A spring 62 surrounds each arm 58, between the shoulder 60 andsleeve 61; so that, by moving the arm 58 longitudinally in the directionof the member 52, the tongue 59 is moved out of engagement with therecess 52*, andmay be turned into the slot 52, so that it may be drawnthrough the slot, for allowing the arm 58 to be disconnected from themember 52.

Each arm 58, except the lower arm, is.

bent downward and thence extended latera1ly,,so that all of the arms 58terminate or substantially the same horizontal plane, and on the end ofeach arm 58 is secured a suitable spring-actuated leaf-clamp 63, whichmay be of any suitable form and construction forsecurely holding the topportion of a music leaf, and therefore, there being a multiplicity ofthese clamps 63, a multiplieity of leaves may be turned separately andin succession. A member 63 is pivoted at and spring-actuated shifterlever consisting of a depending element 67 and an upwardly projectingstop element 68 having a cam surface 68 thereon, said stop element beingpivoted at 69 to a lateral extension of theelement 67, and a compressionspring 70 coacts with a lug 71 for retaining the element 68 in itsnormal position relative to the element 67. The lower edge portion ofthe base late 10 is provided with an arouate slot 2, having a series ofrecesses 73 communicating therewith, and a series of tongues 74separating these recesses. The,

lower end of the member 67 extends forwardly through the slot 72, andthence upwardly, and is provided with a pair of parallel lugs 67',between which is pivoted a latch 75 having its pivot '7 6 adjacent toits upper end, and having a stud 77 extending rearwardly into one of therecesses 73, a spring 78 being provided on the member 67, in contactwith the member 75, for retainingitin its normal closedposition, as

shown in Fig. 3. The lower end of the member 67 constitues otheralternative position, in which the stud base plate 10, and is 41downward; and,

30 willrest in the opposite end ofthe arouate slot 29, and the stud 34will then be on the opposite side of the carriage 24 from,

its present position.

/ A setting lever 80 is pivoted at 81 to the provided with a stud 82,adapted to impinge upon the edge 28' of the plate 28, when the lower armof the lever 80 is swung laterally. In order to swing the lever 80, apull rod 83 is pivotally connected at 84 to the upper arm of the lever80, and the rod 83 is extended downward and terminates ina forwardlyextending finger piece or handle 88, which extends through a slot 85, in

the base plate. The lever 88 is pivotally connected at 86 with a spring87, secured to theguide memberSQ,

and by means or" this spring, the lever 80 and pull rod 88 are returnedto their normal positions, as shown; the rod 83 acting as a stop for thestud 82.

in operation, the operator pulls the. car riage. 24 downward, 88, asdescribed, thereby drawing the catch said catch being in engagement withthe arm 42 of the left-hand bar 42 (see Fig. 2),-this bar 42 is pulleddownward so 'as to swing the bell crank 44 to which it is connected byone of the links 43, so that the other link 48, which is attached to theopposite arm of this bell crank and to the adjacent slide bar 42, drawsthis adjacent slide bar upward while the beam 25 goes downward, untilthe arm 42 of the upwardly moving slide bar is on a higher plane thanthe upper end of the beam 25, and the stud 40 clears the lower end oftogether with its clamp the adjacent tongue. 65, so that the beam 25 isdrawn laterally, by means of the plate 28, link 38 and spring 32; sothat the stud 40 now registers with the next succeeding slot 64, themovement of' the beam 25 having beenarrested in this position by meansof the arm 42 of the contiguous bar 42 upon which it has impinged. Now,as the bell crank 44 was swung on its pivot, by the operation justdescribed, the upper link 55 caused the upper jointed lever to swing onits pivot 57, thereby swinging the arm 58, 63 and the music leaf clampedthereby, through an angle of one hundred and eighty degrees. It will benoted that the member 53 is swung through a considerably less angle thanone hundred and eighty degrees,

'tion at 51 and 52 1n the same-manner that thefirst 7 restedby the upperend by means of the strip pinged upon the arm 42 of said bar.

but the swing of the member 52 and arm 58 is increased by means of theleverage nection at 54 and the stud and slotconnec- (see Fig. 4).Referring to the preceding operations, wherein'the stud 40 is inregistry with the second slot, it will be, seen that vupon allowing thecarriage '24 to ascend, the stud 40 will move up into this second slot,and the catch gage with the arm 42 42; so that when the 41 will en: ofthe third slide bar carriage 24 and its adjuncts are again lowered, thisthird bar 42 will be engaged by the catch 41, so as to rock the bellcrank 45 to which it is con- *nected; thereby actuating the second jointed lever and turning the second music leaf, music leaf was turned. Thisoperation continues until all of the slots 64 have been entered by thestud 40 and until all of the leaves have been turned, in which operationall of the bars 42 have been moved and all of the 'bell cranks have beenswung on their pivots;

provided that there are just four music. leaves to be turned. It will beseen that as the upper end of the beam 25 swings rightward (see Fig.2'), its lower end swings leftward, thereby-drawing the lower end of theplate 28 and its stud 79 leftward; so that, at this stage, when thecarriage'24 is again drawn downward, the stud 79 will be arof the stop68, and the plate 28 is thereby swung leftward on its pivot 27 until thestud 80 rests in the right-hand end of the slot 29. In swingingleftward, the plate 28 carries the rod 33 leftward beyond the pivot 27,so that the upper end of the beam 25 tends to move leftward, so thatwhen the stud 40 is re,- leased from the right-hand slot 64, it movesinto registry with the second slot 64 to the left, and is there arrestedby the bar 42 immediately to the left thereof, havingDimurlng-thisrightward movement, the beam 25 and its adjuncts have pulled eachalternate, slide bar 42 downward, and thereby caused. the otheralternate slide bars to move upward, and now, in this return movement ofthe beam 25 and its adjuncts, the bars that were formerly moved upwardare now pulled downward, so that the bell=cranks .44 and 45 are moved inthe opposite direcgained by the pivotal conthrough the apertures ofthese cars extends a vertical rod or supporting bracket 90, having teeth90 with which one or more of the ears 89 engage, for retaining the shelf88 in adjusted position, so that; the music may be raised or lowered, tosuit the requirement. The rod 90 may be secured on the plate by anyproper means, but 1t 15 preferably removably secured, and this may beaccomplished by suitably bending the lower end thereof and inserting itthrough an aperture 91 in the plate 10, and securing its upper end bymeans of a hook 92.

- in order that the music may be held firmly in place on the shelf 88,it provide a pair of spring clamps .93, pivoted to the plate at 94 andadapted to be swung down into engagement with the outside leaves of thepiece of music, so as to clamp it against the base 10.

TVhen it is desired to turn only three sheets of music, the stud 77 isengaged with the third notch or recess 73 instead of the fourth, and sowhen it is desired to turn only two sheets of music and return them totheir normal positions, said stud 77 is engaged with thesecond recess 73.; but'when it is desired to turn one leaf back and forward a numberofitimes, the stud 77 remains in its normal position.

While I have described a device which is designed for turning themaximum of four music leaves, it will be understood that I do not limitmy invention to this specific construction; and neither do I limit myinvention to the exact details of cons ruction, combination andarrangement of arts, as herewith described and illustrated, but myinvention may only be limited by a reasonable interpretation of theclaims.

Having shown and described a device which is fully capable of attainingthe foregoing objects, in a thoroughly practical and efiicientmanner Iclaim 1. In a music leaf turner, a base plate adapted to be seated on apiano and having means thereon for supporting music leaves, a series ofleaf-engaging elements mounted on a substantially vertical axis, a'series of elements pivoted on a vertical axis and adapted to be swungthrough an arcof less than one hundred and eightydegrees and operatingon the leaf-engaging elements for swinging them through one hundred andeighty degrees, a link connected with each said member, a bell crankconnected with each said link and pivoted on a horizontal axis, a slidebar connected with each said bell crank, a catch for successivelyengaging and moving the respective slide bars, and means for actuatingthe catch. i

2.1m a music leaf turner, a base plate adapted to be seated upon apiano, means on the base plate for supporting music leaves,

a series of jointed levers mounted for rotaaiaaaeo tion on a verticalaxis and each carrying a leaf-engaging member, a series of pairs ofslide bars, a bell crank pivoted on a horizontal axis connected witheach pair of slide bars and with each jointed lever, a catch, means foractuating the catch for moving it alternately into engagement with oneof the slide bars of each pair, and means for shifting certain operatingmechanism of the catch-actuating means for causing the catch tosuccessively engage and move the other slide bars of each pair,substantially as de scribed.

3. In a music leaf turner, a base having means thereon for supportingmusic leaves, mechanism on the base in engagement with the leaves forturning thesame, said mechanism comprising a series of levers and linksand slide bar operatively connected, a carriage. mounted forreciprocation, a shifter beam pivoted on the'carriage and having a catchadapted for engagement with the slide bars, a shifter plate pivoted onthe shifter beam and having a spring connected therewith for actuatingthe shifter plate and shifter beam in either of two alternatedirections, means for automatically shifting the shifter plate when thecarriage is reciprocated, and means for returning the shifter plate intoits normal position.

4:. A music leaf turner comprising a base, a plurality of parallelspaced and horizontally disposed plates projecting therefrom, aplurality of pivoted levers playing upon said plates, a plurality ofarms operated by said levers to turn the pages of music sheets, aplurality of pivoted bell-crank levers connected to said first mentionedlevers by means of. links, a plurality of approximately verticallysliding members connected to said bell-crank members bymeans of 'links,said last mentioned means being connected in pairs to said bell-cranklevers, on the opposlte sides to said pivoted points of the levers sothat when one of said vertically operating means is drawn downwardly theopposite means will be raised upwardly, means to draw downwardly one ofsaid vertically operating means, automatic means to shift said drawingmeans to actuate a second vertically operating means after the firstsaid vertically operating means has been drawn downwardly, and

means to restore said drawing means to its original position.

5 A music leaf turner comprising a plurality of pivoted arms actuatingto turn the' pages of music leaves, a plurality of operat- Y ing means,a plurality of multi-part connectmg means connecting each of saidoperating means to each of said arms, means to actuate each of saidoperating means successively, means to guide said actuating means fromone of said operating means to the next operating means in successive 10of automatically said pivoted means, means to hold said pivoted memberinto operative position, means reversmg sa1d plvoted member and means toreverse said actuating means when said pivoted member is reversed.

In testimony whereof I have signed my name tothis specification inIthepresence of 15 two subscribing witnesses.

FREDERICK ARCHIBALD. Witnesses;

R. O. PICKERING, MARTIN NELSON.

